package cn.itcast.bos.web.action.base;

import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;
import java.util.HashMap;
import java.util.Map;

import org.springframework.data.domain.Page;

import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionSupport;
import com.opensymphony.xwork2.ModelDriven;

public abstract class BaseAction<T> extends ActionSupport implements
		ModelDriven<T> {
	protected T model;

	public T getModel() {

		return model;
	}

	// 利用 无参构造 获取model的实例对象
	public BaseAction() {
		// 构造子类Action对象 ，获取继承父类型的泛型
		// AreaAction extends BaseAction<Area>
		// BaseAction<Area>
		Type genericSuperclass = this.getClass().getGenericSuperclass();
		// 获取类型第一个泛型参数
		ParameterizedType parameterizedType = (ParameterizedType) genericSuperclass;
		Class<T> modelClass = (Class<T>) parameterizedType
				.getActualTypeArguments()[0];
		try {
			model = modelClass.newInstance();
		} catch (Exception e) {
			e.printStackTrace();
			System.out.println("模型构造失败...");
		}

	}

	protected int page;
	protected int rows;

	public void setPage(int page) {
		this.page = page;
	}

	public void setRows(int rows) {
		this.rows = rows;
	}

	public void pushPageDataToValueStack(Page<T> page) {
		Map<String, Object> map = new HashMap<String, Object>();
		map.put("total", page.getTotalElements());
		map.put("rows", page.getContent());
		ActionContext.getContext().getValueStack().push(map);
	}

}
